Ventilator



June 24, 1924. 1,499,092

G. w. BEBOUT VENTILATOR Filed Aug, 30 1922 2 Sheets-Sheet. 1

June 241 G. W. BEBOUT VENTILATOR Filed Aug. 30 1922. 2 Sheets-Sheet 2 Patented June 24, 1924.

UNITED STATES GEORGE W. BEBOUT, OF RICHMOND, VIRGINIA.

VENTILATOB.

I Application filed August 30, 1922'. Serial No. 585,194

To all whom it may concern:

Be it known that I, Gnoncn W. BEBOUT, a citizen of the United States, residing at Richmond, in the county of Henrico'and State of Virginia, have invented certain new and useful lmprovements'in Ventilators, of which the following is a specification.

lhis invention relates to improvements in ventilators and more particularly to a ventilator for installation on railway passenger coaches although it is not limited to this use.

@ne of the primary objectsof the. present invention is to provide a ventilator which will effectually withdraw the foul'and 6011- taminated air from the interior of the coach or other structure on which itis installed and which will operate solely through the travel of the coach and will therefore be devoid of complicated parts.

Another object of the invention is to provide a ventilator so constructed that when number of them are installed upon a rail-- way coach and some arranged in reversed position with relation to the others, fresh will be supplied to the interior of the coach to replace the foul and contaminated air withdrawn therefrom so that ventilation is effected in the most thorough mannor.

another object of the invention is to so construct the ventilator that there will be no likelihood of cinders, snow or rain being driven into the coach, means being provided for disposing of any cinders that might enter the ventilator and for prevent ing snow and rain passing into any portion of the ventilator casing which might be in communication with the interior of the coach.

In the accompanying drawings:

Figure 1 is a side elevation of the ventilator embodying the invention before installation upon the roof of the railway coach, certain of the parts which are hidden being indicated in dotted lines;

Fig. 2 is a detail, vertical, longitudinal, sectional view on the line 2--2 of Fig. 1 illustrating the ventilator installed;

Fig. 3 is a rear end elevation of the ventilator;

Fig. 4 is a front elevation thereof;

Fig. 5 is a vertical transverse sectional view on the line 55 of Fig. 1.

The ventilator embodying the invention comprises a casing which is indicated ingeneral by the numeral 1 and which includes a plane side wall 2, top and bottom walls 8 and 4-, and an approximately semicylindrical side wall 5 which opposes the wall. 2, the walls 3 and 4 constituting substantial tangential continuations of the wall 5. The casing also includes an end wall 6 presenting an opening 7 and an end wall 8 presenting an opening 9. The wall 2 preferably projects marginally beyond the walls '5, l, 6 and 8 as indicated by the numeral 10 so as to provide means whereby the easing maybe secured in place against the side of the roof of a railway passenger coach,

as shown in Fig. 2 of the drawings, the said side of the roof bein provided with an opening 11, and the sa1d wall 2 of the casing being formed with an opening 12 extending from the wall 6 for approximately one-half the length of the casing. It will beobserved by reference to Fig. 2 that the opening 12 communicates with the opening l1 and that the inner or false roof of the coach, ,which is indicated by the numeral 13 is provided with an opening 14 through which the foul and contaminated air Within the coach is to be drawn, any suitable door or damper 15 being provided in connection with the opening let to regulate the outflow ofair through said opening 14:.

In order that a suction draft may be created within the casing and through the opening 12, a Venturi tube indicated by the numeral 16 is arranged within the casing 1 and comprises, as usual, frusto-conical sections 17 and 18 which are connected at their minor ends. The tube 16 is located wholly within the casing and the majorend of the section 17 is secured within the opening 7 in the forward end wall 6 of the casing, this end of the tube being left entirely open so that in the forward travel of the coach in the direction in which the said end of the tube is presented, air will rush through the tube and its velocity will be increased by the gradual contraction of the tube to the point Where it forms juncture with the section 18 thereof. The air entering the tube section 17 will of course expand upon entering the section 118 and the partial vacuum created within the casing 1 forwardly beyond the open or major end of the tube section 18 will effect a forced draft ends of these particular ventilator of air from the interior of the coach through the openings 11 and 12 and out through the rear end of the casing.

In order to prevent snow and rain being driven into the coach through the openings 11 and 12 a baffle ring 19 is preferably arranged within the casing as shown in Figs. 2 and5 of the drawings and comprises an annular body 20 having an opening 21 and provided at its periphery with an outstanding flange 22 which is secured in any suitable manner to the inner surface of the top. bottom and side walls of the casing. The ring 19 is: located substantially opposite the juncture. of the Venturi tube sections 17 and 18 and the wall of its opening 21 surrounds tllcsaid sections, substantially at this point and is spaced therefrom. the opening 21 being of greater diameter than the diameter ofthe minor ends of the said sections 17 andl8. Also it will be observed that the ring 19 is located substantially at the rear end Of the opening 12.

A's before indicated the ventilators are to be arranged some facing in one direction and the others in the opposite direction so tha' when the coach is travelling in the direction toward which. the forward ends of the venti late-rs, or in other words the major ends of the Venturi tube section 17 are presented, foul and contaminated air will be drawn from the interior of the coach through the openings 11 and 12 and out through the rear same time the other ventilators will occupy a reversed position so that the major ends of their tube sections 18 will be presented in the direction of the travel of the coach. Under these conditions air will enter the interiQlZ of the casing 1 and a certain volume of it will pass throughithe opening 20 in the ring 19 and will be delivered to the interior of the coach. In order to exclude cindel's from such of the ventilator casings as are presented in the manner last explained, a screen indicated in general by the numeral 23 is provided and the same comprises a rim 24 designed to be frictionally fitted. into the opening 9 in the end Wall 8 of the casing, spring latches 25 being provided for holding the screen in place. A sheet of wire mesh or other foraminous ma terial 26 is arranged Within the ring 24. for the purpose stated.

i l "hen the ventilator is positioned so as to constitute a means for drawing out, the foul ,air from the interior of the coach, it is of At the course liable that cinders will enter the tube 16 through the open major end of the section 17 of said: tube and these cinders will be discharged into the rear end portion of the casing 1. To provide for discharge of the accumulated cinders from the casing it is preferable that the bottom wall 4; of the casing be provided with a downwardly deflected portion 2'? formed by making suitable incisions in the said bottom wall and then bending down the material between the incisions. The formation of the portion 27 provides an opening 28 through which the cinders may pass.

From the foregoing description of the invention it will be understood that by arranging the ventilators in the manner stated the interior of the passenger coach on which they are installed will be effectually ventilated and without any hkehhood of clnders,

snow or rain being admitted by way of the ventilator.

Having thus described the invention, what is claimed as new is:

1. In a ventilator of the class described, a casing having an opening in its wall and open at its opposite ends, a Venturi tube within the casing having the intake end of its velocity section disposed within one end of the casing and the discharge end of its expanding section presented toward the other said end of the casing and located beyond the opening in the wall of the casing, and a baflie member arranged within the casing and surrounding the said tube in spaced relation thereto and substantially at the juncture of its velocity and expanding sections.

In a ventilator of the class described, a casing having an opening in its wall and open at its opposite ends, and a Venturi tube within the casing having tne intake end of its velocity section disposed within one'open end of the casing and the discharge end of its expanding section presented toward the other said end of the casing and beyond the opening in the wall of the casing, the bottom wall. of the casing having an opening and a ortion inclined downwardly an rearwar ly from the forward side of the opening to provide a cinder outlet, the said cinder discharge being located beyond the discharge end of the expanding section of the tube.

In testimony whereof I affix my signature.

enoncn w. snnouri [n 5. 

